Reservoir handle for fountain brush having piston means for filling and dispensing



April 3, 1951 L. F. PERwAs RESERVOIR HANDLE FOR FOUNTAIN BRUSH HAVINGPISTON MEANS FOR FILLING AND DISPENSING 2 Sheets-Sheet l Filed May 1,1945 `MF. ML. ru..

INVENTOR.

@I f S, 36 ffl i @mi prH 3, HSE

Filed May l, 1945 L. F. PERWAS RESERVOIR HANDLE FOR FOUNTAIN BRUSHHAVING PISTON MEANS FOR FILLING AND DISPENSING 2 Sheets-Sheet 2 E93] l??JZINVENTOR.

Patented Apr. 3, 1951 HAVING PISTONt ANT) DIsBENsING MEANS FOR. FILLING-nudtvigF; Pel-was, new, York, N..Y.

ADplicationMay/Ll, Seiia;l.l\lof.591,244.v

present invention. inits. broad'r aspect, has

reference to` improvements. in fountain toothr brushes wherein a-shaftis employed anda pis,- ton.. which4 is. detachable. from the shaft. Theshaft has a valve-like end adjacent to a head and which in the passivecondition of my tooth bruslrprevents passage ofdentifrice to the brushbristles, and.. which isadapted to be connected with.. the piston,andthe. shaft reciprocatedA in thet active condition of.: my toothbrusheither to rell thev dentifrice reservoirV or discharge. dentifrice fromthe reservoir to. the bristles. Other. features ofV my inventionare.y (Dthe` pro.- vision. of improved air ventingv means,. (2)` the. provisionof an improved arrangement ofv knurled nut to rotate theshaft to engageit in the inactive position with the dentifrice channel tothe bristlessealed and the shaft disengaged, (3') the provision of a novel andimproved piston which in the inactive position isv disconnected` brieflyoutlined produces a simple, sturdy, de,-V

pen'd'able" and efficient fountain tooth brush wherein the dentifrice iscontained in the handle* for'v dispensing as occasion requires, andwhich will not leak when not inuse and" which may be" convenientlycarried in'k a hand bag or in the pocket.

Other and equallyimportant objects and ad'- vantagesv ofmy inventionwill be apparent from the. following description and" drawings, and ityispointed out thatchanges in form, size, shape,

materials, and constructiony and arrangement' ofV parts ispermissibleand within the purview of my' broad inventive concept, and the scope oflthe appended claims:

Inithei drawings, wherein I. have "illustrated a:

preferred form of' myY invention: y

Fi'gurel is; a. longitudinal section showing the parts'in' passiveposition; l

Figure 2Y is a: longitudinali section with the' tooth brushiassemblyturned 90' from Figure 1;

Figure .3"is a detail longitudinal section showingy the operating shaftretracted and connected withthepiston, the'-spring'compressed, and thedentifrice passage to the; brush head opened;

(Cl. Z22-128)" 2i FigurenV- is a detail longitudinal,sectionis'howingthe piston` and shaft being.. advancedl to. dis chargedentifrice;

Figure. 5 is a sectionontheline 5'-5of. Eig.- 5E ure-1;.

Figure 6 is a bottom endview; Figure '7i isa sectionA en the. line.1.----1v of Fig,.- ureY 1;

Figure 8 is aperspective. View ofthe threaded' 10; sleeve oftheoperating rod'beneath. the disklike head;` l

Figuren 9T is. a. perspective View of the disklilieV head, tapered,.Valve-like end` threaded sleeve,v4 and'Y operating rodshank. with airvent opening; 15s, Figure 1.0'1 is an enlarged section of a modifiedform of cap latch;..

Figure -1'1`V ist a face view of.. the" modie'd cap latch: Y

Figure 12 is asection on the line |,2-I'2 of'Fig# 20' ure. 10,` andFigure 13 is anenlarged fragmentary' section; ofi the beveled knurlednut shown in' Figures .1l and 2;

In .the drawings, whereinv like characters of reference are used todesignate like or similar. parts;` The numeral' I' designates my brushhead, and` 2 the shank, aipassage or channel 3' isformed in the brush`head and shank, and' communicates through ports 4 in the bristle disks``Ei with` the bristle tufts 6j.- The bristle disksare threaded as'. at'lto be detachably engaged in the brushhead I. The shank is. threaded asat 3 to be engaged in thev end or head 9 of the handle I. A cap like.member l|` is cemented over the end and about end'ii'angesV l2beneathwhich is a beveled knurled nutl i3, .the edges of which` extendthrough. slots andbeyondthe sur-face of thecapand` end tozbegraspedandzturned. to detachthe brushV head shank. 2- withwwhich it isthreadedly engaged.. The channelA 3: communicates with an opening I4.

inr the end.V 9: of the. handle l-whichfis restricted to= form abeveled.annular shoulder ll consti# tuting` a valve-seat as will hereinafterappear At eachiside of the endg' arethreadedbores i5 in-i which; arethreaded thesleevesJ I6. Each. sleeve houses a spring l.1awasher t8 anda ball. I9,

whichlisurge'd.outwardly byf'the' spring I1 butiisf prevented .frombeingY disengaged'. from the sleeve by anlannular lipA 20: about. theouter edge ofthe* sleeve. Th'e'fb'alls: 1'9 constitutezlatchesfore'ngagingindepressons 2|v inthe'cap 22;t'o detach.- ably" h'o'lcLtheIcap i'n placeon. theM handle'. shown. inA Figures I0, 11' and the end.may' have a; slot. 2f3l`oneach side with an linclined end" '2 Nitroreceivethe beveled end.'2'5"`off'a'p1atee26, the.

opposite end of which is held in place by a screw 21. Each plate has abeveled opening 28 to engage the sides of a conical latching member 29which is pressed outwardly by a spring 30 in the bore 3| in the end andserves a purpose identical with the balls I 9 to detachably latch thecap 22 in place.

The handle I is oval in cross-section and hollow to provide a dentifricereceptacle 32. An end part or plug 33 closes the opposite end of. thehandle and seats within its side walls. This part 33 has a central bore34 which'is enlarged 4 end by screws 58. With the parts assembled asshown in Figs. 1 and 2 the ribs 54 coact with the knurled nut 5B wherebythe shaft may be rotated with the end nut 52 in the recess in the member51. Suitable packing 59 is located in the enlarged part 35 of the bore.To fill the receptacle 32 with dentifrice, the nut 56 is rotated torelease the threaded part 55 of the shaft from the end 33. The nut 52 isthen grasped and the shaft .39 retracted as shown in Figure 3 (air beingexhausted through vent The beveled edge 44 of the head 43 seats on thebeveled edge 48 of the at 35 and threaded as at 35 and leads into a cir-An operating shaft or piston rod 39 fits through the bore 34 and islongitudinally slotted' as at 4I) tof.

provide an air vent. The shaft is slidably and rotatably mounted and itsupper end is pointed as at 4I to form a valve .engaging the seat I I onthe end of the handle. The valve part 4I has a packing 42 and adisk-like head or valve 43 is mounted on the shaft back of the valvewhich has a beveled edge 44. Back of the head is an enlarged cylindricalthreaded collar 45-see Figures 8 and 9. In the passive position of theparts of my device, the head'43 bears against the end 9 and the valve 4I.rests on seat II to close the channel 3 to prevent leakage ofdentifrice from the reservoir into the brush head.

A loose piston pump 46 having packing rings 4'.'

is carried in the reservoir, and hasr a beveled edge 48 and a deepannular groove 49 receiving the spring 50, the opposite end of whichseats in an 43. The piston has a threaded bore 5Ia and nor? mally restsagainst the end'v part 33 when the parts are passive as in Figures 1 and2. At the opposite end of the shaft 39' is a knurled nut 52, an enlargedcollar 53 having radial ribs 54 and a threaded part or plug 55. Aknurled nut 56 is carried in the depression 31 of the end part 33.. Thebrush head is placed in the supplyof dentifrice and the dentifrice isdrawn through the head, channel 3, and opening I4 in the end 9,'and intothe receptacle 32 in the handle, that is the dentifrice is simply suckedinto the receptacle. In this operation the piston rod 39 and head 43 aredrawn outwardly by the knurled nut 52 and the threaded part 45 threadedinto the sleeve in the piston. The piston is then forced inwardly as thebrush head is placed in the dentifrice and as the piston is drawnoutwardly to the position shown in Fig. 3 the dentifrice is drawn. intothe opening 32 in the .handle to flllkthe handle. The shaft 39 isthenturned in the opposite direction to remove the thread 45 from theycollar of the piston and the piston` rod is moved inwardly with themember-4I coacting with the seat IIto close the passage from the handleto the brush head. The shaft is then pushed in and is urged by spring50until valve 4I engages seat I I' vand the head 43 bears against theend 9 to seal thev receptacle as shown in Figures 1 and `2, in whichposition the threaded part 55 is engaged of the piston 46 and isaccessible through slots 38, and is internally bored and keyed to engageg collar 53. In the passive position. the threaded part 55 is engagedwith the threaded part 36 of 1 theend 33, and the knurled nut 52 is inanopenannular groove 5I in the under side of theihead .35"

piston. The valve 4I is withdrawn from its seat I I and opening I4'andchannel 3 are open for passage of dentifrice to the bristles. The shaftis moved in and out until sufficient dentifrice is dispensed to thebristles, whereupon the tooth brush is ready for use and the shaft isreturned Vto its passive position of Figure 1.

From the foregoing, it is believed that the op eration and advantages ofmy invention will be apparent, but it is again pointed out thatinterpretation of its scope should only be conclusive when made in thelight of the subjoined claims.

I claim: 1. In a fountain toothbrush, the combination which comprises ahollow tubular handle, oval 4shape in cross section, having an openouter end A and a head having a centrally disposed longitudinallypositioned opening therethrough, an .w oval shaped plug positioned inthe open end of the handle and having a longitudinally disposed aninternally threaded hub in the center thereof with a valve seat in theinner end and spaced y from the hub, a piston rod extended through thepiston and plug having a valve on the inner end positioned to coact withthe valve seat of the piston and also having a threaded boss thereonspaced from the valve and positioned to screw into the threaded hub ofthepiston, a spring on the piston rod between the piston and valve, saidvalve having a valve element thereon positioned to close the openingthrough the head of the. handle, and a finger gripping nut on the outerend of the piston rod for screwing the threaded boss of the piston rodinto the threaded hub of the piston and also for reciprocating the l.

piston to provide a pump.

2. In a fountain toothbrush, the combination which comprises a hollowtubular handle, oval shape inkcross section, having an open outer endand a head having a centrally disposed longitudinally positioned openingtherethrough, -an 1v oval shaped plug positioned in the open end of thehandle and having a longitudinally disposed -1 opening therethrough witha recess in the outer end and positioned around the said openingtherethrough, an oval shaped pump piston slidi ably mounted in thehandle and having a longitudinally disposed opening therethroughaligned.:

with the opening throughthe plug and having an internally threaded hubinthe center thereof with a vvalve seat inthe inner end and spaced fromthe hub, a piston rod extended'through,v

the piston and plug having a valve on the inner end positioned tocoact'with the valve seatk o f the piston and also having'a threadedboss there^ .f ing ln the'cap 51which.is. heldinplace on: the .154mspaced -from the valve and positioned ,tq.;

screw into the threaded hub of the piston, a spring on the piston rodbetween the piston and valve, said valve having a Valve element thereonpositioned to close the opening through head of the handle, a fingergripping nut on the outer end of the piston rod for screwing thethreaded boss of the piston rod into the threaded hub of the piston andalso for reciprocating the piston to provide a pump, said nut of thepiston rod having a ribbed collar on the piston rod side thereof, and anut positioned on the collar and having slots therein for receiving theribs of the collar for rotating the collar and piston rod.

3. In a fountain toothbrush, the combination which comprises a hollowtubular handle, oval shape in cross section, having an open outer endand a head having a centrallx7 disposed longitudinally positionedopening therethrough, an oval shaped plug positioned in the open end oithe handle and having a longitudinally disposed opening therethroughwith a recess in the outer end and positioned around. the said openingtherethrough, an oval shaped pump piston vslidably mounted in the handleand having a longitudinally disposed opening therethrough aligned withthe opening through the plug and having an internally threaded hub inthe center thereof with a valve seat in the inner end and spaced fromthe hub, a piston rod extended through the piston and plug having aValve on the inner end positioned to coact with the valve seat of thepiston and also having a threaded boss thereon spaced from the valve andpositioned to screw into the threaded hub of the piston, a spring on thepiston rod between the piston and valve, said valve having a valveelement thereon positioned to close the opening through the head of thehandle, a nger gripping nut on the outer end of the piston rod forscrewing the threaded boss of the piston rod into the threaded hub ofthe piston and also for reciprocating the piston to provide a pump, saidnut of the piston rod having a ribbed collar on the piston rod sidethereof, and a nut positioned on the collar and having slots therein forreceiving the ribs of the collar for rotating the collar and piston rod,said piston rod having a longitudinally positioned slot therein forrelieving air behind the piston when the piston is reciprocated inpumping.

LUDWIG F. PERVVAS.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 1,711,516 Alland May 7, 19291,913,466 Ackermans June 13, 1933 2,041,605 Heilweil May 19, 19362,208,013 Baker July 16, 1940 2,272,641 Mureau Feb. 10, 1942 2,294,285Chu Aug. 25, 1942 2,305,158 Hanses Dec. 15, 1942 2,317,111 Perwas Apr.20, 1943 2,318,635 Salinger May 11, 1943 2,328,048 Bair Aug. 31, 19432,370,626 Heidman Mar. 6, 1945

